C++ Programs for College Students ⌨️

• This repository contains essential C++ programs for college students.
• I recommend compiling the C++ programs using g++ in GNU/Linux.

Installing g++ in Linux

• Ubuntu: sudo apt install build-essential
• Fedora: sudo dnf install g++
• Most distributions bundle gcc and g++ with them by default, so a seperate installation isn't required.

Compiling a CPP program in g++

• Ensure g++ is installed by running g++ --version command.
• Open a terminal emulator of your choice.
• Navigate to the relevant directory using cd command.
• Optionally, use touch <filename>.cpp command to create a CPP file.
• Enter g++ filename.cpp to compile the file. Any compilation/syntactical errors in the program will be displayed here.
• After a successful compilating, an output binary file a.out will be created by default.
• You can also provide your own custom output name by adding -o flag at the end of g++ command. For example, g++ <filename>.cpp -o <filename>. Now the binary will be created in a custom filename.
• To run the binary files just type ./a.out or ./binaryname in the terminal.

Writing and compiling Hello World C++ Program

• You can write this program in any IDE or text editor of choice.

• Example code:-

/*helloworld.cpp*/

#include<iostream> //header file
using namespace std; //for using cin,cout commands without std:: tags
int main()
{
cout<<"Hello World"<<endl; 
}

• To create for the output for file we need compile it using a compiler like GCC,etc.
• Open Terminal in Linux and cd into the file's directory.
• Type g++ helloworld.cpp or c++ helloworld.cpp and enter this will create an a.out binary file.
• For creating an output file with cutstom name use g++ helloworld.cpp -o helloworld.
• Now we can run the binaries using ./a.out or ./helloworld
• Output in the terminal would be:-

Hello World